SKU: 86233464165

King Engine Bearings Main Bearing Set for 1983-1993 Chevrolet G20 (MB5257SI0.25)

Sale price$53.46 Regular price$59.40
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Description

King Engine Bearings Main Bearing Set for 1983-1993 Chevrolet G20 (MB5257SI0.25)Carrying on a tradition of durability and dependability, KING Bi Metal (aluminum) engine bearings feature 100% lead free aluminum silicon. King has 4 different variations of their aluminum based bearings: (AM Series) K 783 Standard aluminum based material, equivalent to SAE 783, used for low and medium load engines. King AM Series main and rod bearings are recommended for street or marine applications. They have superior embeddability, which provides

Carrying on a tradition of durability and dependability, KING Bi-Metal (aluminum) engine bearings feature 100% lead-free aluminum silicon.

King has 4 different variations of their aluminum based bearings:

(AM-Series) K-783 -Standard aluminum based material, equivalent to SAE-783, used for low and medium load engines.

King AM-Series main and rod bearings are recommended for street or marine applications. They have superior embeddability, which provides greater macro-particle and reduces scratching of the crank journals and tearing or weakening of the Babbitt overlays. The direct replacements feature tolerance control up to +/- .0001—and they're lead-free, making them environmentally friendly and user-safe. Order the King AM-Series rod bearings in the application designed for proper fitment with your vehicle.

(SI-Series) K-788 -Aluminum based material, strengthen by 2.5-3% silicon, for medium load engines or nodular cast iron crankshafts.

King SI-Series main and rod bearings are recommended for OE applications. These replacement bearings are designed for aftermarket gasoline or diesel engine rebuilding—and performance engines with factory crankshafts. The bearings have an improved crankshaft finish for reducing microscopic ferrite peaks on improperly ground or polished nodular cast iron crankshafts. King SI-Series main and rod bearings feature improved oil clearance to reduce wear and increase engine life, which in turn reduces operating noise, vibration, and excess oil flow. Order the bearing set designed for fitment on your make and model.

(SM-Series) K-789 -Aluminum alloy bonding layer. The strongest aluminum based material. The alloy is strengthened by addition of Manganese and Chromium (Mn, Cr), Used for high load applications.

For high load and performance applications, King SM-Series main and rod bearings are the strongest aluminum-based material offered by King. The alloy is strengthened by the addition of manganese and chromium. SM-Series crankshaft main bearings feature a traditional steel-backing, aluminum bonding layer, and the aluminum bearing alloy. They are available for a wide variety of vehicle and engine applications.

(HP-Series) K-787 - King HP-Series rod bearings were developed mainly for drag race applications needing a material harder than the Babbitt top layer. These applications demanded a structure that could withstand high loads for short durations and still offer higher embeddability and compatibility. In response, King developed the HP-Series featuring the Alecular metal structure.

The HP-Series is also suited for many performance applications with nodular cast iron crankshafts, such as street, strip, and some levels of Circle Track racing.

HP-Series bearings are particularly suitable for the following cases:

  • When a tri-metal bearing's Babbitt overlay extrudes over the sides, migrates to one end, or is physically removed by the crankshaft
  • When the intermediate layer of a tri-metal bearing is exposed, damaging the crank journal and requiring expensive grinding or replacement
  • When contaminants enter the oil stream, scratching and damaging the crankshaft journals


Check your bearing size using our fitment calculator here
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 86233464165

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This charger is a fantastic alternative for powering up MacBook Pro, Air, iPad Pro, and other USB-C devices. The charging speed is impressively fast, delivering a full charge to my MacBook Pro in no time. It’s also highly versatile, working seamlessly with my Samsung Galaxy and other USB-C gadgets. The included charging cable is durable and long enough for flexible use, making it convenient for home, office, or travel. The build quality feels solid and reliable, and it doesn’t overheat even during extended use. If you’re looking for a high-performance, cost-effective charger, this one ticks all the boxes. Highly recommended for anyone needing a dependable USB-C charger! charger is a fantastic alternative for powering up your MacBook Pro, Air, iPad Pro, and other USB-C devices. The charging speed is impressively fast, delivering a full charge to my MacBook Pro in no time. It’s also highly versatile, working seamlessly with my Samsung Galaxy and other USB-C gadgets. The included charging cable is durable and long enough for flexible use, making it convenient for home, office, or travel. The build quality feels solid and reliable, and it doesn’t overheat even during extended use. If you’re looking for a high-performance, cost-effective charger, this one ticks all the boxes. Highly recommended for anyone needing a dependable USB-C charger!
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Reviewed in the United States on December 27, 2024
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Solid charger for the price
Picked this up as a backup for MacBook Air and honestly its been working great. It is enough to fast charge the laptop even while Im using it which is all I really needed. Also tried it on my iPhone and it works well. Easy to connect, no need to setup anything
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Reviewed in the United States on May 27, 2026
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Durable - Works for my Mac and my kids’ computers
My kids are constantly losing my MacBook charger and they’re expensive! So on Prime Day I treated myself and bought this charger - which I told them they’re never ever allowed to touch under any circumstances. The brick is pretty big compared to what I’m used to. The cord length is fine and it charges my MacBook quickly just like I wanted it to! I was really pleasantly surprised by how legit this charger is for the price, given how costly they can be. It seems really sturdy. Turns out, this charger also fits the Chromebooks that all 3 of my kids use for school, and whose chargers are always missing. So “my” charger is once again a shared charger. But it gets all 3 Chromebooks and my laptop fully charged in a night. Nice, easy, durable product for a great price.
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Reviewed in the United States on August 16, 2025
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Claude Hill
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★★★★★ 5
Excellent!
Excellent PSU Very High Quality.
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Reviewed in the United States on May 29, 2026
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Man, where was this Sunveza charger when I first got my MacBook Pro? I'm the type who'd forget my head if it wasn't attached, and yup, I did it – forgot my charger on my first day bringing the new MacBook to the office. Enter Sunveza with its high-efficiency and surprisingly affordable solution. First off, this thing charges FAST. Talking about going 0 to 80% in what feels like a blink. And the compatibility? Spot on. Whether you're rocking a MacBook Pro, Air, or even an iPad, this charger's got you. Plus, the multiple security features? A major bonus. Peace of mind knowing my gadgets are safe from overcharging or short-circuits. Now, if we're comparing aesthetics, yeah, it doesn't have that Apple "heft." But honestly, does that matter? It's like comparing a sports car by the weight of its keys. What matters is performance, and Sunveza delivers. I stumbled upon this gem after a less-than-stellar experience with a pricey off-brand from Target. Sunveza's charger is just the right size, doesn't sag from the outlet, and feels just right. The only tiny hiccup? The cable can be a smidge finicky sometimes, needing a gentle push to snugly fit. But considering the overall value and the fact that I could always grab a new cable if needed, it's a minor gripe. In short, if you're in the market for a MacBook charger that won't break the bank and performs like a champ, Sunveza's got your back. Highly recommend! 🌟🌟🌟🌟🌟 EDIT: Wow okay... so things were working great for several months but then I started having issues with this charger and it would intermittently start and stop charging. The charger block itself would also get painfully hot to the touch. I had been using this product for less than a year when I started having these issues. I tested this out with other devices and outlets and witnessed the same behavior. I also took my MacBook to the Apple Store and they informed me that my battery was damaged, likely because of this charger. In light of this, I can no longer recommend the Sunveza charger.
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